0.4.0 - ArNode and Camera manipulators + Improved AR environmental lighting and reflections + Simpler ARCore session configuration + Enabling auto focus without pausing and resuming ARCore session

Features

• Added an ArNode manipulator for moving, rotating and scaling nodes in the ArSceneView and a Camera manipulator for panning and zooming the camera in SceneView
• Improved AR environmental lighting and reflections by removing spectacular filtering
• Added a precision parameter for estimation of AR environmental lighting to increase performance by skipping frames
• Made the ARCore session configuration simpler

Fixes

• Fixed the order of destroying the Filament resources to avoid an exception
• Enabling the auto focus without pausing and resuming the ARCore session